AOC EN9410 Monitor LCD free download

File name EN9410 (L9C service manual).pdf

L9CMonitor Service Manual for the Envision EN9410 Feb, 18th, 2005 Revision: 1A Issued By: Checked By: _____________________________________________________________________________ ____ The release of this document is under control by the company. Any extra copy of this document must be written permission by the product manager. L9C service manual Page1 of 48 - Techview Confidential - L9CMonitor _____________________________________________________________________________ ____ - Quanta Confidential ­ History Page Reversion 1A Date 2/18/2005 1 ST Remark Released. L9C service manual Page2 of 48 - Techview Confidential - L9CMonitor Content Chapter A. WARNING B. SAFETY PRECAUTIONS 1. DIMENSIONS 2. GENERAL INFORMATION 3. SPECIFICATIONS 4. THEORY OF OPERATION 5. CONTROL LOCATION 6. NECESSARY EQUIPMENT LIST 7. BLOCK DIAGRAM 8. CONDUCTOR VIEW 9. SCHEMATIC DIAGRAM 10. EXPLODED VIEW 11. TROUBLE SHOOTING HINTS 12. REPLACEMENT PARTS LIST 13. AUTO BALANCE Page 4 5 6 8 9 20 23 32 33 35 38 45 46 48 48 L9C service manual Page3 of 48 - Techview Confidential - L9CMonitor WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the product or products dealt within this service information by anyone else could result in serious injury or death. L9C service manual Page4 of 48 - Techview Confidential - L9CMonitor SAFETY PRECAUTIONS 1. CAUTION: No modification of any circuit should be attempted. Service work should only be performed after you are thorough familiar with all of the following safety checks and servicing guide lines. 2. SAFETY CHECK Care should be taken while servicing this LCD display. Because the high voltage is used in the inverter circuit. These voltages are exposed in such areas as the associated transformer circuits. 3. POWER SUPPLY REQUIREMENTS The external power converter for this display utilizes AC and DC cords. AC cord is detachable, But DC cord is permanently attached. Any attempt to replace another adapter could result in serious problem on the display. 4. LEAKAGE CURRENT HOT CHECK 4-1 Plug the AC cord directly into the AC outlet. Do not use an isolation transformer during this check. 4-2 Connect a 1500 ohm, 10 watt resistor, paralleled by a 0.15uF capacitor between each metallic part and a good earth ground. 4-3 Use an AC voltmeter with 1000 ohm / volt or more sensitivity and measure the AC voltage across the combination 1500 ohm resistor and 0.15uF capacitor. 4-4 Move the resistor connection to each exposed metallic part and measure the voltage. 4-5 Reverse the polarity of the AC plug in the AC outlet and repeat the above measurement. 4-6 Voltage measured must not exceed